A new study from Kent State University shows that the more time students spend on their cellphones, the more anxiety they felt and the worse they did academically.

Researchers surveyed more than 500 university students and recorded their daily cellphone use. The students were asked about their anxiety levels and happiness. The students also allowed researchers to access their cumulative GPAs.

An analysis showed that increased cellphone use tended to be linked to a lower GPA and higher anxiety levels. The researchers also found that a higher GPA was related to higher levels of happiness.

Kent State researchers had previously found a link between high cellphone use and low cardio-respiratory fitness.

Research done elsewhere showed that cellphones can help people feel socially connected, but the Kent State researchers speculated that students might feel anxious if they believe they need to be in constant touch with their friends.

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